Uploading video from a mobile

I think I've found the problem with my failed attempt to upload a video. I'm sending this post from the browser on my PC. It seems that the Blogger platform can handle .3gp video, which is good news. But the upload requires me to click a box to say that the video complies with the rules of Blogger. When I send the video as an email attachment, there's no opportunity to confirm this so the video doesn't appear. I'm going to have to think again...